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local bench = require "util.bench"
local libs = {
"../json.lua", -- https://github.com/rxi/json.lua
"dkjson.lua", -- https://github.com/LuaDist/dkjson
"jfjson.lua", -- http://regex.info/blog/lua/json
--"json4lua.lua", -- https://github.com/craigmj/json4lua
}
-- JSON string: wikipedia example stored 1000 times in an array
local text = "[" .. string.rep([[{
"firstName": "John",
"lastName": "Smith",
"isAlive": true,
"age": 25,
"address": {
"streetAddress": "21 2nd Street",
"city": "New York",
"state": "NY",
"postalCode": "10021-3100"
},
"phoneNumbers": [
{
"type": "home",
"number": "212 555-1234"
},
{
"type": "office",
"number": "646 555-4567"
}
],
"children": [],
"spouse": null
}, ]], 1000):sub(1, -3) .. "]"
-- As this is meant to be a pure Lua benchmark, we remove the ability to
-- require 'lpeg' so dkjson doesn't use it for parsing. (Incidentally json.lua
-- seems to outperform libraries which use lpeg when both are using LuaJIT)
local _require = require
require = function(modname)
if modname == "lpeg" then error() end
return _require(modname)
end
-- Run benchmarks, store results
local results = {}
for i, name in ipairs(libs) do
local f = loadfile(name)
if not f then
error( "failed to load '" .. name .. "'; run './get_json_libs.sh'" )
end
local json = f()
-- Remap functions to work for jfjson.lua
if name == "jfjson.lua" then
local _encode, _decode = json.encode, json.decode
json.encode = function(...) return _encode(json, ...) end
json.decode = function(...) return _decode(json, ...) end
end
-- Warmup (for LuaJIT)
bench.run(name, 1, function() json.decode(text) end)
-- Run and push results
local res = bench.run(name, 10, function() json.decode(text) end)
table.insert(results, res)
end
bench.print_system_info()
bench.print_results(results)
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